In many cases, the failure of the motorcycles to start is often caused by the motorcycle spark plug. The spark plug is the core part of ignition. Many people may not see it or know what it is. Today, let's fully introduce the spark plug. A motorcycle spark plug is a must-have for gasoline engines. Generally speaking, there is one spark plug per cylinder. Some special engines have 2-3 spark plugs per cylinder. Don't think this little thing is inconspicuous, but it is extremely important.

The role of the spark plug: What is the function of the motorcycle spark plug? In fact, it is to introduce the high-voltage electricity generated by the ignition coil into the engine cylinder. After a small spark is generated between the electrodes, the mixture in the cylinder can be ignited to make the engine work normally.
The working environment of the motorcycle spark plug is unimaginably bad. Its "pressure resistance" ability must be strong. During the four strokes of the engine, the temperature during the intake stroke is 50-60°C, and the pressure is about 90KPa; and during ignition, the temperature will be Instant rises to about 2000-3000 ℃, and the pressure also soars to 4000KPa. It should also be able to withstand at least 50 kg/cm2 of the explosive force and chemical corrosion of gasoline or gas. This is just one stroke, and the spark plug needs to alternate back and forth frequently in such a rapidly heating and cooling environment, not only to be able to "resist" but also to be insulated.
Through the above introduction and analysis of the motorcycle spark plug, hope it helps you.